BOREAS TE-22 Tree Ring Data The BOREAS TE-22 team collected complete tree cores at several sites in the SSA and NSA in order to perform historical growth studies and relate the information to their modeling activities. The cores were collected during the summer of 1994 in the Northern and Southern Study Areas. A sample of the file types resulting from the analysis of the tree cores are provided. The files contain tabular ASCII text. Contact Information: David Meade Lawrence Mechanicsville, Virginia (804) 559-9786 dave@fuzzo.com Jeffrey A. Newcomer Raytheon ITSS NASA GSFC Greenbelt, MD (301) 286-7858 (301) 286-0239 (fax) Jeffrey.Newcomer@gsfc.nasa.gov Data Files: The following describes the information that is known about the sample data files. As files are completed, they will be sent to the International Tree- Ring Data Bank (http://www.ngdc.noaa.gov/paleo/treering.html) or they can be obtained from the following WWW-site: http://fuzzo.com/truescience/boreas.htm. A current description of the file formats can be obtained from the following WWW-site: http://www.ngdc.noaa.gov/paleo/treeinfo.html. The sample files contain tree ring data derived by TE-22 from cores collected from for Abies balsamea (ABBA) or Picea glauca (PCGL) trees at the SSA mixed species auxiliary site, operational grid ID. The North American datum of 1983 (NAD83) latitude and longitude coordinates for the site are: Latitude = 53.9375° N Longitude = 105.14246° W 012ND.RWL -Contains minimum latewood density measurements at site 1 012NDA.CRN -Site 1, 1872-1994, PCGL 012NDR.CRN -Site 1, 1873-1994, PCGL 012NDS.CRN -Site 1, 1871-1994, PCGL 012RW.RWL -Contains ring width measurements at site 1 012RWA.CRN -Site 1, 1871-1994, PCGL 012RWR.CRN -Site 1, 1873-1994, PCGL 012RWS.CRN -Site 1, 1871-1994, PCGL 012XD.RWL -Contains maximum latewood density measurements at site 1 012XDA.CRN -Site 1, 1872-1994, PCGL 012XDR.CRN -Site 1, 1875-1994, PCGL 012XDS.CRN -Site 1, 1871-1994, PCGL 021ND.RWL -Contains minimum earlywood density measurements at site 3 021NDA.CRN -Site 3, 1903-1994, ABBA 021NDR.CRN -Site 3, 1906-1994, ABBA 021NDS.CRN -Site 3, 1903-1994, ABBA 021RW.RWL -Contains ring width measurements at site 3 021RWA.CRN -Site 3, 1906-1994, ABBA 021RWR.CRN -Site 3, 1909-1994, ABBA 021RWS.CRN -Site 3, 1903-1994, ABBA 021XD.RWL -Contains maximum latewood density measurements at site 3 021XDA.CRN -Site 3, 1905-1994, ABBA 021XDR.CRN -Site 3, 1907-1994, ABBA 021XDS.CRN -Site 3, 1903-1994, ABBA Format for Tree-Ring Data Files: Raw Data Files (File Extension .RWL) These are measurements in units of 0.01 mm of the thickness of tree ring width for each year. Each file consists of all the measurements for a given site. Fifty or more Core ID numbers and data series may comprise one (site) file. Missing value code is 999. The 10 values following the decade are the 10 annual measurements for the 10 years of that decade. First and last decade rows for each core may contain less than 10 values. The format is: Core ID Number columns 1-6 Decade columns 9-12 Data Values columns 13-73, 6 columns/measurement, 10(I6) Optional Site ID columns 74-78 Processed Data Files (Site Chronologies, File Extension .CRN) These are the normalized averages from a stand of trees, representing percentage of mean growth observed for each year over the entire stand. Site Chronologies are used in climate analysis, and it is these values which are displayed by the ITRDB software. Data are stored as 4-digit numbers, with a value of 1000 representing mean growth and 900 representing 90% of mean growth, etc. There is only one time series per file, in contrast to the raw data files. Missing value code is 9990. Site information is stored in the first 3 records of the file. Format for chronology header records: Record #1: 1-6 Site ID, 10-61 Site Name, 62-65 Species Code, optional ID#'s Record #2: 1-6 Site ID, 10-22 State or Country, 23-30 Species, 41-45 Elevation, 48-57 Lat-Long, 68-76 1st & last Year Record #3: 1-6 Site ID, 10-72 Lead Investigator, 73-80 comp. date Records 4-?? Chronology Data Site ID# column 1-6 Decade column 7-10 Index Value-Sample Number* pairs of values, columns 11-80, 10(I4+I3) TRL ID#(optional) column 82-88 *Index Values, columns 11-14,18-21,25-28,32-35,etc # of samples used in calculating chronology, columns 15-17,22-24,29-31,36- 38,etc Chronology Statistics, Last Record, Optional: Site ID# column 1-6 Number of Years column 8-10 First Order Autocorrelation column 13-16 Standard Deviation column 19-22 Mean Sensitivity column 25-28 Mean Index Value column 29-35 Sum of Indices column 37-44 Sum of Squares of Indices column 46-53 Max# of series column 62-63 Data Access Contact for Data Center/Data Access Information: These BOREAS data are available from the Earth Observing System Data and Information System (EOS-DIS) Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC). The BOREAS contact at ORNL is: ORNL DAAC User Services Oak Ridge National Laboratory (865) 241-3952 ornldaac@ornl.gov ornl@eos.nasa.gov Procedures for Obtaining Data: BOREAS data may be obtained through the ORNL DAAC World Wide Web site at http://www-eosdis.ornl.gov/ or users may place requests for data by telephone, electronic mail, or fax. Output Products and Availability: Requested data can be provided electronically on the ORNL DAAC's anonymous FTP site or on various media including, CD-ROMs, 8-MM tapes, or diskettes. The complete set of BOREAS data CD-ROMs, entitled "Collected Data of the Boreal Ecosystem-Atmosphere Study", edited by Newcomer, J., et al., NASA, 1999, are also available. References Cook, E.R., and Kairiukstis, L.A., eds. 1990. Methods of Dendrochronology. Kluwer Academic Publishers, 101 Philip Drive, Norwell, MA 02061 USA, or P.O. Box 17, 3300 AA Dordrecht, The Netherlands. Fritts, H. C. 1976. Tree Rings and Climate. Academic Press LTD., 24/28 Oval Road, London NW1, or 111 Fifth Avenue, New York NY 10003. Hughes, M.K. et al. 1982. Climate from Tree Rings. Cambridge University Press, Cambridge, UK. TE22_Tree_Ring.doc 06/09/99